<div class="pipe">
  <span>
    <p>Object</p>
    <div *ngFor="let item of object | keyvalue">
      {{item.key}}:{{item.value}}
    </div>
    <p>Map</p>
    <div *ngFor="let item of map | keyvalue">
      {{item.key}}:{{item.value}}
    </div>
  </span>
  <h4>指数级增长pipe</h4>
  <p>power: <input [(ngModel)]="power" /></p>
  <p>boost: <input [(ngModel)]="factor" /></p>
  <h5>Super power boost: {{ power | expontentialStrength: factor }}</h5>
  <section>
    <h5>非纯管道 vs 纯管道</h5>
  </section>
</div>
 